P. A. Ludden

1.8k total citations · 1 hit paper
30 papers, 1.4k citations indexed

About

P. A. Ludden is a scholar working on Agronomy and Crop Science, Genetics and Animal Science and Zoology. According to data from OpenAlex, P. A. Ludden has authored 30 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 26 papers in Agronomy and Crop Science, 17 papers in Genetics and 6 papers in Animal Science and Zoology. Recurrent topics in P. A. Ludden's work include Ruminant Nutrition and Digestive Physiology (25 papers), Genetic and phenotypic traits in livestock (17 papers) and Reproductive Physiology in Livestock (16 papers). P. A. Ludden is often cited by papers focused on Ruminant Nutrition and Digestive Physiology (25 papers), Genetic and phenotypic traits in livestock (17 papers) and Reproductive Physiology in Livestock (16 papers). P. A. Ludden collaborates with scholars based in United States and Türkiye. P. A. Ludden's co-authors include B. W. Hess, V. Nayigihugu, Wendy D. Myers, M. J. Cecava, D. C. Rule, O. Küçük, M. S. Kerley, K. S. Hendrix, T.R. Johnson and R.L. Belyea and has published in prestigious journals such as Journal of Dairy Science, Gene and Journal of Animal Science.

In The Last Decade

P. A. Ludden

30 papers receiving 1.4k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Technical Note: A procedure for the preparation and quantitative analysis of samples for titanium dioxide1

2004 684 citations Wendy D. Myers, P. A. Ludden et al. Journal of Animal Science profile →

Peers

Countries citing papers authored by P. A. Ludden

Since Specialization

Citations

This map shows the geographic impact of P. A. Ludden's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by P. A. Ludden with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites P. A. Ludden more than expected).

Fields of papers citing papers by P. A. Ludden

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by P. A. Ludden. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by P. A. Ludden. The network helps show where P. A. Ludden may publish in the future.

Co-authorship network of co-authors of P. A. Ludden

This figure shows the co-authorship network connecting the top 25 collaborators of P. A. Ludden. A scholar is included among the top collaborators of P. A. Ludden based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with P. A. Ludden. P. A. Ludden is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Transcriptome differences in the rumen of beef steers with variation in feed intake and gain 2016 ·Gene ·(unknown), Amanda K. Lindholm‐Perry, H. C. Freetly, W. M. Snelling, John W. Kern, J. W. Keele, Jeremy R. Miles, Andrew P Foote, William T. Oliver, L. A. Kuehn, P. A. Ludden	40
2	Growth and carcass fatty acid composition of beef steers fed soybean oil for increasing duration before slaughter 2009 ·Meat Science ·P. A. Ludden, O. Küçük, D. C. Rule, B. W. Hess	22
3	Effect of subacute dietary nitrate on production traits and plasma analytes in Suffolk ewes 2009 ·animal ·Rebecca Cockrum, Kathleen J Austin, P. A. Ludden, K. M. Cammack	11
4	Effects of ruminal protein degradability and frequency of supplementation on nitrogen retention, apparent digestibility, and nutrient flux across visceral tissues in lambs fed low-quality forage1 2009 ·Journal of Animal Science ·(unknown), (unknown), Timothy J. Robinson, D. L. Harmon, P. A. Ludden	17
5	Effect of protein supplementation on expression and distribution of urea transporter-B in lambs fed low-quality forage1 2008 ·Journal of Animal Science ·P. A. Ludden, (unknown), Kathleen J Austin, (unknown), Elizabeth Belden, Henry J. Harlow	39
6	Effects of supplemental ruminally degradable protein versus increasing amounts of supplemental ruminally undegradable protein on site and extent of digestion and ruminal characteristics in lambs fed low-quality forage1 2007 ·Journal of Animal Science ·(unknown), (unknown), P. A. Ludden	20
7	Supplementing a ruminally undegradable protein supplement to maintain essential amino acid supply to the small intestine when forage intake is restricted in beef cattle1 2005 ·Journal of Animal Science ·E. J. Scholljegerdes, T. R. Weston, P. A. Ludden, B. W. Hess	8
8	Excretion patterns of titanium dioxide and chromic oxide in duodenal digesta and feces of ewes 2005 ·Small Ruminant Research ·Wendy D. Myers, P. A. Ludden, V. Nayigihugu, B. W. Hess	35
9	Site and extent of digestion and amino acid flow to the small intestine in beef cattle consuming limited amounts of forage1 2004 ·Journal of Animal Science ·E. J. Scholljegerdes, P. A. Ludden, B. W. Hess	16
10	Technical Note: A procedure for the preparation and quantitative analysis of samples for titanium dioxide1 breakdown → 2004 ·Journal of Animal Science ·Wendy D. Myers, P. A. Ludden, V. Nayigihugu, B. W. Hess	684
11	Effects of oscillating dietary protein on nutrient digestibility, nitrogen metabolism, and gastrointestinal organ mass in sheep1,2 2002 ·Journal of Animal Science ·P. A. Ludden, (unknown), B. W. Hess	29
12	Effects of oscillating dietary protein on ruminal fermentation and site and extent of nutrient digestion in sheep1 2002 ·Journal of Animal Science ·P. A. Ludden, (unknown), B. W. Hess	19
13	Influence of the novel urease inhibitor N-(n-butyl) thiophosphoric triamide on ruminant nitrogen metabolism: I. In vitro urea kinetics and substrate digestion. 2000 ·Journal of Animal Science ·P. A. Ludden, D.L. Harmon, Brian Larson, (unknown)	13
14	Influence of the novel urease inhibitor N-(n-butyl) thiophosphoric triamide on ruminant nitrogen metabolism: II. Ruminal nitrogen metabolism, diet digestibility, and nitrogen balance in lambs. 2000 ·Journal of Animal Science ·P. A. Ludden, D. L. Harmon, G. B. Huntington, Brian Larson, (unknown)	21
15	Amino acid and energy interrelationships in growing beef steers: II. Effects of energy intake and metabolizable lysine supply on growth. 1998 ·Journal of Animal Science ·P. A. Ludden, M. S. Kerley	4
16	Amino acid and energy interrelationships in growing beef steers: I. The effect of level of feed intake on ruminal characteristics and intestinal amino acid flows. 1997 ·Journal of Animal Science ·P. A. Ludden, M. S. Kerley	15
17	Influence of Source and Amount of Dietary Protein on Milk Yield by Cows in Early Lactation 1996 ·Journal of Dairy Science ·(unknown), M. J. Cecava, T.R. Johnson, P. A. Ludden	73
18	Supplemental protein sources for steers fed corn-based diets: II. Growth and estimated metabolizable amino acid supply 1995 ·Journal of Animal Science ·P. A. Ludden, J. M. Jones, M. J. Cecava, K. S. Hendrix	12
19	The value of soybean hulls as a replacement for corn in beef cattle diets formulated with or without added fat. 1995 ·Journal of Animal Science ·P. A. Ludden, M. J. Cecava, K. S. Hendrix	47
20	Supplemental protein sources for steers fed corn-based diets: I. Ruminal characteristics and intestinal amino acid flows2 1995 ·Journal of Animal Science ·P. A. Ludden, M. J. Cecava	42

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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